Drier.



No. 875,874. PATENTED JAN. '7, 1908. J. WBINTZ.

DRIER.

APPLIGATION FILED APR. 30. 1906.

3 SHEBTS-S'HEET 1.

THE NORRIS Ptnms 60-. wAsnluc1oM,-D. C4

. PATENTED JAN. 7, 1908. J. WBINTZ.

DRIER.

ION 1 ED PR. 30. 1906. APPLIOAT IL A 3 SHEETS-SHEET 2.

WITNESSES: 1 lNVEA/TOFB.

rns "cums PETERS cm. WASHINGTON. u c.

PATENTBD JAN. 7, 1908. J. WBINTZ.

DRIER.

wPLmATmn FILED APR. so. 1905.

a SHEETS-SHEET s.

THE NORRIS FEVER! cm, vusumamu, n. c.

UNITED JACOB WEINTZ, OF CLEVELAND, OHIO.

DRIER.

Specification of Letters Patent.

Patented Jan. 7, 1 908.

Application filed April 30. 1906- Serial No. 314.334:-

To all whom it may concern:

Be it known that I, JACOB l/VEINTZ, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Driers, of which the following is a specification, the principle of the invention being herein. explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to driers, particularly applicable to drying salt, sugar, grains and such like granular substances. its main objects are to evaporate moisture from the substance to be dried by a current of air, heated by steam or hot air pipes within the drier, passing over and through the substance; to keep the substance in a constant state of agitation and in a constant state of progression through the apparatus and to so arrange the apparatus that the material to be treated is fed into that end of it at which the saturated air is exhausted or drawn out, and at the end where the steam or hot air is introduced into the heating pipes, so that the material in the dampest state first encounters the highest temperature in the apparatus, and to constantly revolve the heating pipes, and a series of elevators attached to them, so that the material to be dried will be carried up by the elevators and falling back from them be brought into frequent momentary contact with the heated-pipe sur faces, in its passage through the apparatus.

The annexed drawings and the following description set forth in detail certain mechanism embodying my invention; the disclosed means, however, constituting but one of various forms in which the principle of my invention may be employed.

In said annexed drawings: Figure 1 is a front end elevation of an apparatus embodying my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a vertical longitudinal section through the cylinder, etc., of my device, on an enlarged scale and partly broken away. Fig. 4 is a vertical transverse section of the same on the lines l 4 of Fig. 3, and Fig. 5 is a similar section on the line 55 of Fig. 3.

The details of my invention are mainly within and supported by a fixed or non-rotatable cylindrical shell A, mounted upon suitable brackets, or saddlesB, which rest upon foundation piers 1), preferably of masonry. For convenience of construction the shell is divided into several sections, or lengths a, three being shown in the drawing, Fig. 2, and these sections are connected by rings C. These rings are bolted together as shown in Fig. 3, and are provided with annular flanges c, to which the ends of the shell sections are secured by rivets, and flanges c which project inwardly slightly beyond the inner face of the wood. lining a of the shell.

At each end of the cylindrical shell is an annular ring 1), provided with a flange d, to

,which the shell end is secured by rivets, and

a seat for a ball-race ring E the latter feature being shown here in connection with the one end of the drum only. The ends of the shell are closed by rotatable spider castings F and F which may be duplicates in all essential particulars, except that the front-end spider F is provided with a series of gear tcethf which are omitted from the spider F. ith the exceptions just noted a description of one of these spiders will apply to both, and the following reference letters indicate like parts in both. Casting F consists of an annular ring f, having an outwardly extending flange in which is formed a seat for a ball-race ring E. Within the ringf and formed integral with it, is a spider having hollow arms f radiating from a common hollow center. A crossscction of each of these arms forms a hollow square, and their outer ends are closed by the ring f into which the sides and faces of the arms merge. On their outer sides the arms are closed, but each has an opening f through its inner face around which is formed a circular flange At the center of the spider an opening f is formed in its outer wall and secured to a raised boss around this opening, by a suitable flange plate g, is a pipe G, from which the steam supply [lows to the hollow arms f. The spiders F'and F are connected by pi)es lil having flange plates It at each end olted against the inner faces of the spider flanges f" so as to connect the pipes with the openings f. The spiders are held together and in their respective places at the ends of the shell by these connecting pipes, thus constituting a cylindrical radiator frame Which is adapted to be revolved in the fixed shell.

Spider casting F revolves upon a bearing formed by balls in the ball race, and spider F upon rollers I) supported in a suitable frame or saddle B, Fig. 3. Connecting the two spiders F and F at their central portions is an enlarged pipe II which serves as a support and forms an additional heating and drying surface.

A pipe G is connected to the axial center of the spider F to carry off the exhaust steam, and the end of each of the hollow arms of this spider is connected to this exhaust pipe by a small pipe connection 9 which is designed to carry off the water gathering in the arm through steam condensation. The shell may be provided with or without a wood lining a, which is slightly less in thickness than the depth of the flanges c of the connecting rings C and also of the shoulders d on the rings I), so that the surface of the lining is slightly below the surfaces of the said rings and shoulders.

Sweeps or elevators J extend throughout part of or the full length of the shell, from one spider to the other, and are arranged with their outer edges in close proximity to the wood. lining of the shell, not touching it, however, for such contact is prevented by the slightly raised surfaces of the flanges c and the shoulders d on which the elevators would strike and bear before coming into contact with the wood lining. At their ends these elevators are connected to and supported from the pipes H by means of clamping yokes K, which embrace the pipes with firm frictional contact and have split lugs 7c in which the inner edges of the elevators are secured by clamping bolts 7c. Any suitable number of pipes andv elevators may be employed, but I prefer sixteen, arranged at regular intervals, as shown in the drawings.

The shell A, which is stationary, is slightly inclined, as shown in Fig. 2, so that the material to be dried, as it is picked up by the elevators and then falls back off of them, grad ually works its way down the incline until it reaches the exit spout N, at the lower end. At the top of the highest end of the shell is an inlet or feed spout O, and a fan-blower P, the latter to draw a continuous current of saturated air from the shell into which the supply of fresh air enters by way of the materialdischarge spout N, and through openings M. As before stated the shell is fixed or stationary while the spider-frame heads and their connecting pipes and elevators revolve in it. In order to give the desired motion to these revolving parts the spider F is provided with an internal gearf, which is engaged by a pin ion R, mounted on a counter-shaft 1, which also carries a gear-wheel B. This is engaged by a pinion S, on a shaft 8, driven by a belt pulley S. The steam supply pipe G extends into a fixed coupling T, provided with packing boxes and glands t, for making steamtight joints around the revolving pipe. A steam supply pipe U is connected to this coupling.

In the operation of my device steam is introduced into the revolving pipes or coils at one end and leaves them at the other end. The material to be dried is introduced into the shell at the same end as the steam supply enters the pipes, and the saturated air is also drawn out at this end of the shell. The damp material, therefore, first encounters the air current where it is at its highest temperature and most heavily laden with moisture. From its admission point the material progresses down the inclined shell, in a direction opposite to the movement of the air current, and encounters air that is lower in temperature but drier than that through which it has already passed, so that the progressively drying product passes into air that is increasingly dry, and, therefore, better adapted to," extract moisture from than to impart it to the material. The material to be dried falls first to the bottom of the shell where it is taken up by the elevators and carried up to points where the elevators become so inclined inwardly that it will slip or fall off from them, thus dividing the material and presenting a large surface area to the drying air. In being thus carried up and then falling back the material advances step by step down the inclined shell until it reaches the exit spout N. from the elevators a portion of the material also falls upon the hot surfaces of the pipes H, below the elevators from which it falls, and this contact hastens the drying process.

Instead of using steam for the heating medium, gases of combustion from a suitable furnace may be passed through the pipes H and H, as will be readily understood.

Having thus described my invention in detail, that which I particularly point out and distinctly claim, is

1. In a drying apparatus, the combination of a stationary cylinder having hollow rotatable heads at its ends; exterior steam pipe connections to said heads; a series of longitudinal pipes within the cylinder connecting heads; and means for rotating said heads and their connecting pipes.

2. In a drying apparatus, the combination of a stationary cylinder provided with material inlet and. outlet openings; hollow rotatable heads closing the ends of said cylinder; exterior steam connections for said heads; a series of longitudinal pipes within said cylinder connecting said heads, said pipes being disposed so as to constitute a cylindrical radiator structure; and means for rotating said heads and connecting pipes.

3. In a drying apparatus, the combination of a stationary cylinder having hollow rotatable heads at its ends; exterior steam pipe connections to said heads; a series of pipes In falling back within the cylinder connecting said heads; and a series of longitudinal elevators supported by said connecting pipes; and means for rotating said heads with their connecting pipes and the elevators carried thereby.

4. r In a drying apparatus, the combination ot a stationary cylinder provided with material inlet and outlet openings; hollow rotatable heads closing the ends of said cylinder; exterior steam connections for said heads; a series of longitudinal pipes within said cylinder connecting said heads, said pipes being disposed so as to constitute a cylindrical radiator structure; a corresponding series of longitudinal elevators mounted upon said pipes and projecting into the annular space between the same and the cylinder shell; and means for rotating said heads, connecting pipes, and elevators.

5. in a drying apparatus, the combination of a stationary cylinder provided with material inlet and outlet openings; hollow heads closing the ends of said cylinder;ball-bearings in the one end of said cylinder wherein the corresponding head is rotatably mounted; a roller bearing adjacent to the other end ol said cylinder whereon the other head is similarly supported; a series of pipes within said cylinder connecting said heads; and exterior steam connections for the latter.

6. In a drying apparatus, the combination of a stationary cylindrical shell having a suitable lining; a series of longitudinal. elevators adapted to rotate within the shell about its axis, their outer edges sweeping close to the said lining; means for effecting such rotation of said elevators; and annular llanges or shoulders projecting .inwardly from the shell to a greater depth than the said lining to prevent contact of the said elevators with the lining.

7. In adrying apparatus, the combination of an inclined stationary cylinder having hollow rotatable heads; a series of longitudinal pipes within the cylinder connecting said heads; a series of longitudinal elevators adapted to rotate with said heads and connecting pipes, a steam supply pipe connected to the head at the higher end of the cylinder and an exhaust or ell-take pipe connected to the other head; a material feed-inlet and an air outlet at the higher end. of the cylinder; a material outlet and an air inlet at the lower end of the cylinder; and means for rotatin the hollow heads, their connecting pipes and the elevators.

S. In drying apparatus, the combination of an inclined stationary cylinder provided with material inlet and outlet openings; hollow heads closing the respective ends oi said cylinder; ball-bearings in the upper end of said cylinder wherein the corresponding head is rotatably mounted; a roller bearing adjacent to the lower end of said cylinder whereon the other head is similarly supported; a series of longitudinal pipes within the cylinder connecting said heads; a eorrespolnling series of longitudinallelevators mounted upon said pipes respectively and directed outwardly therefrom; a steam supply pipe connected with the head at the higher end of the cylinder, and an exhaust pipe connected to the other head; and means for rotating said. heads, connecting pipes, and elevators.

9. In drying apparatus, the combination of an inclined stationary cylinder provided with material inlet and outlet openings; the respective ends ol said cylinder; ball-bearings in the upper end of said cylinder wherein the corresponding head is ro'tatably mounted a roller bearing adjacent to the lower end of said cylinder whereon the other head is similarl y supported a series of longitudinal pipes within the cylinder connecting said heads, said pipes being disposed so as to constitute a cylindrical radiator structure; a corresponding series of longitudinal elevators mounted upon said pipes respectively and projecting into the annular space between the same and the cylinder shell; a steam supply pipe con nected with the head at the higher end of the cylinder, and an exhaust pipe connected to the other head; and means for rotating said heads, connecting pipes, and elevators.

Signed by me this 12 day of April 1906.

JACOB WEINTZ.

Attested by JNo. F. OBERLIN, G. W. SAYWELL. 

